Antenna device and electronic device with the same

ABSTRACT

An electronic device is provided. The electronic device includes a printed circuit board (PCB), a shield can disposed on the PCB, an antenna radiator of which at least a part enters an internal space of the shield can and is installed at an inner surface of the shield can, and an electrical connecting means which is installed at a corresponding position of the PCB so as to be electrically connected with the at least a part of the antenna radiator installed at the inner surface of the shield can.

PRIORITY

This application claims priority under 35 U.S.C. §119 to a Korean PatentApplication filed in the Korean Intellectual Property Office on Aug. 6,2013 and assigned Serial No. 10-2013-0093151, the entire contents ofwhich are incorporated herein by reference.

BACKGROUND OF THE INVENTION

1. Field of the Invention The present invention relates generally to anantenna device and an electronic device to which the antenna device isapplied.

2. Description of the Related Art

Electronic devices for communication have been developed to providevarious functions according to user's demands. For example, electronicdevices perform a basic call function and also allow a user to listen tomusic using an MP3 sound source, enjoy web surfing using a wirelessInternet network, download and use various programs using the wirelessInternet network, and play and watch high-definition videos at highspeed.

Further, electronic devices may have at least one high-pixel imagepickup device (camera lens assembly) to take a picture of an object.Recently, a still-picture, moving picture, and stereoscopic imageshooting capability have been provided. Further, due to the rapiddevelopment of communication techniques, it is possible to use acommunication function of Wi-Fi, GPS, Bluetooth or the like using oneantenna radiator. Further, electronic devices have a Near FieldCommunication (NFC) function using an NFC module.

In general, since an antenna device for NFC is operated in a lowfrequency band (13.56 MHz), a radiator having a surface area of at least30 mm×50 mm is required. In order to apply the radiator to electronicdevices which have become gradually slimmer, various measures have beenproposed.

However, in an electronic device for NFC, contacting with a feedingportion for power feeding is hindered by the external environment, andspace application is also restricted. Therefore, in installing ordisposing an antenna device for NFC, it is necessary to improvereliability for the antenna device.

SUMMARY OF THE INVENTION

The present invention has been made to substantially solve at least theabove problems and/or disadvantages and to provide at least theadvantages below. Accordingly, an aspect of the present invention is toprovide an antenna device and an electronic device with the same.

Another aspect of the present invention is to provide an antenna devicewhich is capable of reducing manufacturing cost and time, and anelectronic device with the same.

Yet another aspect of the present invention is to provide an antennadevice which enhances a lifespan and reliability thereof, and anelectronic device with the same.

According to an aspect of the present invention, an electronic deviceincludes a printed circuit board (PCB), a shield can disposed on thePCB, an antenna radiator of which at least a part enters an internalspace of the shield can and is installed at an inner surface of theshield can, and an electrical connecting means which is installed at acorresponding position of the PCB so as to be electrically connectedwith the at least a part of the antenna radiator installed at the innersurface of the shield can.

According to another aspect of the present invention, a shield canincludes an upper surface, a rear surface which is opposite to the uppersurface, an opening which is defined in at least a portion of the uppersurface to pass through to the rear surface, and an antenna radiator ofwhich at least a part is installed at the upper surface, and a feedingportion of the antenna radiator is installed at the rear surface throughthe opening.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features and advantages of the presentinvention will become more apparent from the following detaileddescription when taken in conjunction with the accompanying drawings inwhich:

FIG. 1 is a front perspective view of an electronic device according toan embodiment of the present invention;

FIG. 2 is a rear perspective view of the electronic device according toan embodiment of the present invention;

FIG. 3 is a view illustrating an installation and separation state of arear cover of the electronic device according to an embodiment of thepresent invention;

FIG. 4 illustrates an antenna device installed in the electronic deviceaccording to an embodiment of the present invention;

FIG. 5 is an exploded perspective view of a printed circuit board (PCB),a shield can and an antenna device according to an embodiment of thepresent invention; and

FIGS. 6A to 6D are partial cross-sectional views showing installationstates of an antenna device according to an embodiment of the presentinvention.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE PRESENT INVENTION

Various embodiments of the present invention will be described hereinbelow with reference to the accompanying drawings. In the followingdescription, detailed descriptions of well-known functions orconstructions will be omitted since they would obscure the invention inunnecessary detail. Also, the terms used herein are defined according tothe functions of the present invention. Thus, the terms may varydepending on a user's or operator's intentions or practices. Therefore,the terms used herein must be understood based on the descriptions madeherein.

In explaining the various embodiments of the present invention, anelectronic device having a shield can which is installed on a printedcircuit board (PCB), on which a plurality of electronic components ismounted, so as to shield the electronic components, and an antennadevice for Near Field Communication (NFC) is illustrated and described,but the present invention is not limited thereto. For example, theelectronic device may be applied to various devices having acommunication function of receiving and transmitting audio, video, dataor the like using a broadcasting module and a broadcasting antennadevice, such as a Personal Digital Assistant (PDA), a lap-top computer,a mobile phone, a smart phone, a netbook, a Mobile Internet Device(MID), an Ultra Mobile PC (UMPC), a tablet personal PC, a navigationdevice, and the like.

FIG. 1 is a front perspective view of an electronic device 100 accordingto an embodiment of the present invention, and FIG. 2 is a rearperspective view of the electronic device 100 according to theembodiment of the present invention.

Referring to FIGS. 1 and 2, an electronic device 100 includes a displaydevice 102 installed at a front surface 101 thereof. A touch screendevice which simultaneously inputs and outputs data may be applied asthe display device 102. An ear piece 103 receiving opponent's voice isdisposed at an upper side of the display device 102, and a plurality ofsensors 104, such as a proximity sensor and a illuminance sensor, and acamera device 105 may be disposed to the right side of the ear piece103. The electronic device 100 further includes a microphone device 106for inputting a sound, a key pad device 107 in which input buttons aredisposed, and a rear camera device 109 which is installed at a rearsurface 108 thereof. However, the electronic device 100 is not limitedthereto, and may further include various additional devices whichprovide well-known additional functions.

As described below, the electronic device 100 has an embedded antennadevice for wireless communication with other electronic devices. Forexample, the electronic device 100 may have an antenna device for NFCinstalled or mounted in an internal space thereof.

According to embodiments of the present invention, the antenna devicefor wireless communication is installed or attached to a shield caninstalled on a PCB. The antenna device may be a loop antenna device inwhich a pattern type antenna radiator is wound multiple times along anedge of a flexible printed circuit, but is not limited thereto. Forexample, the antenna radiator may be a plate type embedded antennadevice, such as a dipole antenna device, a monopole antenna device, ahelical antenna device, a micro-strip patch antenna device and a planarinverted F antenna device.

FIG. 3 is a view illustrating an installation and separation state of arear cover 130 of the electronic device 100 according to an embodimentof the present invention, and FIG. 4 illustrates an antenna device 30installed in the electronic device 100 according to an embodiment of thepresent invention.

Referring to FIGS. 3 and 4, the electronic device 100 includes a fronthousing 110, 20 a rear housing 120 and a rear cover (or a battery cover)130. The front housing 110 defines an external appearance of theelectronic device 100, and also is coupled with the rear housing 120 andthus defines a space receiving a plurality of electronic components. Therear cover 130 is coupled to the rear housing 120 and separable from therear housing 120. The rear cover 130 may have a plurality of snap-fits131 disposed at an edge thereof, 25 and the rear housing 120 may havecoupling grooves 121 defined to correspond to the snap-fits 131.

When the rear cover 130 is coupled with the rear housing 120, thesnap-fits 131 of the rear cover 130 are coupled to the coupling grooves121 of the rear housing 120. Further, when the rear cover 130 is coupledwith or separated from the rear housing 120, the rear cover 130 may bedeformed to be elastically bent, as illustrated in the drawing. The rearcover 130 also protects a battery 122 received in the front housing 110and the rear housing 120. The rear cover 130 may have an opening 132through which the rear camera device 109 is exposed.

According to embodiments of the present invention, a PCB (or a mainboard) 10 on which fundamental circuits and the plurality of electroniccomponents are mounted is installed in the rear housing 120. Radiofrequency (RF) components associated with a wireless signal through theantenna device 30, such as an RF connector, a mobile communicationcomponent, a band pass filter and an antenna matching device, are alsomounted on a surface of the PCB 10. The PCB 10 may serve to set anexecution environment of the electronic device 100, maintain informationthereof, allow the electronic device 100 to be stably driven, andcontrol data of all devices to be smoothly input, output and exchanged.

According to embodiments of the present invention, a shield can 20shielding the plurality of electronic components mounted on the PCB 10is installed on the PCB 10. The shield can 20 serves to shield theelectronic components and also absorb heat generated from the electroniccomponents. The antenna device 30 for wireless communication may beinstalled on one surface of the shield can 20. The antenna radiator ofthe antenna device 30 is installed so that at least a part of theantenna radiator enters through an opening 21 defined in the shield can20.

As described below, at least a part of the antenna radiator enteringthrough the opening 21 may be installed at an inner surface of theshield can 20. Also, at least a part of the antenna radiator enteringthrough the opening 21 includes a feeding pad connected with a feedingportion of the PCB 10. That is, the shield can 20 may be configured tohave a feeding point provided at the inner surface thereof. The antennaradiator is configured to have a larger surface area than the shield can20 or the PCB 10.

FIG. 5 is an exploded perspective view of the PCB 10, the shield can 20and the antenna device 30 according to an embodiment of the presentinvention.

Referring to FIG. 5, in the electronic device 100, the shield can 20 isinstalled on the PCB 10, and the antenna device 30 is installed on theshield can 20. The shield can 20 includes an upper surface 24 having apredetermined surface area, and a plurality of side surfaces 25 having apredetermined height. The side surfaces 25 are installed or defined toenclose an edge of the upper surface 24, and are configured to enclose alower opened space between a receiving of the PCB 10 and an underside ofupper surface 24, as seen in FIG. 6A. When the shield can 20 isinstalled on the PCB 10, the shield can 20 defines the receiving space22 for receiving a plurality of components 12 and an electricalconnecting means 40 mounted on the PCB. However, the receiving space 22is not limited thereto, and may further receive various additionaldevices which provide well-known additional functions. When the shieldcan 20 is installed on the PCB 10, the shield can 20 is fixed so as toshield the plurality of components 12 and the electrical connectingmeans 40 mounted on the PCB. The shield can 20 may be made of aconductive metallic material such as SUS and aluminum. In this case, theupper surface 24 and the side surfaces 25 may be integrally formed bypressing, an injection molding process, or the like.

The antenna device 30 is installed on the shield can 20. The antennadevice 30 may be a loop antenna device in which a pattern type antennaradiator 33 is wound multiple times along an edge of a flexible printedcircuit, but is not limited thereto. For example, the antenna device 30may be a plate type embedded antenna device, such as a dipole antennadevice, a monopole antenna device, a helical antenna device, amicro-strip patch antenna device and a planar inverted F antenna device.

At least a part 32 of the antenna radiator 33 enters through an opening21 defined in the shield can 20, and is installed at the inner surfaceof the shield can 20. The part 32 of the antenna radiator 33 enteringthrough the opening 21 of the shield can 20 includes a feeding pad 31connected with a feeding portion of the PCB 10, as shown in FIG. 6A. Thefeeding pad 31 of the antenna radiator 33 is connected with the feedingportion of the PCB 10 through the electrical connecting means 40. Theelectrical connecting means 40 may be a C-clip 40 as illustrated in thedrawing and formed of various conductive materials such as a well-knownconductive tape having a predetermined thickness. A fixing end locatedat one end of the C-clip 40 is electrically connected with the feedingportion of the PCB 10, and a free end located at the other end thereofis in contact with the feeding pad 31 of the antenna radiator 33.

Therefore, the C-clip 40 is disposed between the feeding pad 31 of theantenna radiator 33 and the feeding portion of the PCB 10 so as topromote good electrical connection therebetween. The C-clip 40 ismounted on the PCB 10, and the free end of the C-clip 40 is in contactwith the feeding pad 31 of the antenna radiator 33 during the assemblyprocess. Due to this configuration, the antenna device 30 receives acurrent from the feeding portion, and resonate by magnetic inductioncoupling, and thus may transmit and receive a wireless signal at acorresponding frequency range. The antenna device 30 may be used forshort range communication such as NFC communication and RFIDcommunication.

FIGS. 6A to 6D are partial cross-sectional views showing installationstates of the antenna device 30 according to an embodiment of thepresent invention.

Referring to FIG. 6A, the shield can 20 serves as a noise blocker forpreventing internal noise generated from the PCB 10 from being leaked toan outside and preventing external noise from being introduced therein.The shield can 20 is installed on the PCB 10 of the electronic device100. The shield can 20 defines the receiving space 22 receiving theplurality of electronic components 12 and the electrical connectingmeans 40 mounted on the PCB, and is fastened to the PCB 10, for example,by a screw 60. The antenna device 30 is installed on the shield can 20,and the at least a part 32 of the antenna radiator 33 enters thereceiving space 22 through the opening 21 defined in the shield can 20and may be attached to the inner surface 23 of the shield can 20. The atleast a part 32 of the antenna radiator 33 entering through the opening21 of the shield can 20 includes the feeding pad 31 electricallyconnected with a feeding portion 11 of the PCB 10. The feeding pad 31may be electrically connected to the feeding portion 11 through theelectrical connecting means 40.

A ferrite film 50 may be disposed between the shield can 20 and theantenna radiator 33, which serves to minimize an influence of the shieldcan 20 made of a metallic material on radiation performance of theantenna radiator 33. The ferrite film 50 may be stacked together withthe antenna radiator 33, or may be attached to the shield can 20 throughan adhering means such as an adhesive and a tape.

A manufacturing method of the antenna radiator 33 used in the antennadevice 30 includes an SUS welding method in which a metal piece having adesired pattern is prepared by a stamp forming process and thenthermal-welded to a body, an etching method which plates whole parts ofan object with a metal and then removes the plated metal except for adesired pattern, a double injection molding method which plates a moldedbody only with a pattern, an LDS (Laser Direct Structure) method whichcarves a conductive circuit in a three-dimensional surface using a laserbeam and then plates it, and a PDS (Printing Direct Structure) method inwhich a molded body is printed with conductive ink and then plated.

The antenna device 30 includes the antenna radiator 33 having apredetermined pattern, and a lower portion of the antenna device 30 maybe electrically connected with the feeding portion 11 of the PCB 10through the electrical connecting means 40. The electrical connectingmeans 40 may be a C-clip 40 as illustrated and various conductivematerials such as a well-known conductive tape having a predeterminedthickness. The C-clip 40 is fastened to the PCB 10, and include a fixingend 41 connected with the feeding portion 11 and a free end 42 which isextended from the fixing end 41 and then bent to be elasticallydeformed. The free end 42 of the C-clip 40 is in contact with thefeeding pad 31 of the antenna radiator 33.

Therefore, the C-clip 40 is disposed between the feeding pad 31 of theantenna radiator 33 and the feeding portion 11 of the PCB 10 so as topromote a good electrical connection. The C-clip 40 may be mounted onthe PCB 10, and may be integrally defined by bending a metal plate. Thefree end 42 of the C-clip 40 is in smooth contact with the feeding pad31 of the antenna radiator 33 during assembling. Due to thisconfiguration, the antenna device 30 may receive a current from thefeeding portion 11, or may resonate by magnetic induction coupling, andthus transmits and receives a wireless signal at a correspondingfrequency range.

Referring to FIG. 6B, the shield 20 serves as a noise blocker forpreventing internal noise generated from the PCB 10 from being leaked toan outside and prevents external noise from being introduced therein.The shield can 20 is installed on the PCB 10 of the electronic device100. The shield can 20 provides the receiving space 22 receiving theplurality of electronic components 12 and the electrical connectingmeans 40 mounted on the PCB, and is fastened to the PCB 10 by the screw60. The antenna device 30 is installed on the shield can 20, and the atleast a part 32 of the antenna radiator 33 enters the receiving space 22through the opening 21 defined in the shield can 20 and is attached tothe inner surface 23 of the shield can 20.

Unlike in FIG. 6A, the antenna device 30 in FIG. 6B is installed at theinner surface 23 of the shield can 20 so as to be bend in the form of a‘⊂’ shape through the opening 21.

The at least a part 32 of the antenna radiator 33 entering through theopening 21 of the shield can 20 includes a feeding pad 31 electricallyconnected with a feeding portion 11 of the PCB 10. The feeding pad 31 iselectrically connected to the feeding portion 11 through the electricalconnecting means 40.

The ferrite film 50 is disposed between the shield can 20 and theantenna radiator 33. The ferrite film 50 minimizes an influence of theshield can 20 made of a metallic material on radiation performance ofthe antenna radiator 33. The ferrite film 50 may be stacked togetherwith the antenna radiator 33, or may be attached to the shield can 20through an adhering means such as an adhesive and a tape.

Referring to FIG. 6C, the shield can 20 serves as a noise blocker forpreventing internal noise generated from the PCB 10 from being leaked toan outside and prevents external noise from being introduced therein.The shield can 20 is installed on the PCB 10 of the electronic device100.

The shield can 20 provides the receiving space 22 receiving theplurality of 10 electronic components 12 and the electrical connectingmeans 40 mounted on the PCB, and is fastened to the PCB 10 by the screw60. The antenna device 30 is installed on the shield can 20, and the atleast a part 32 of the antenna radiator 33 enters the receiving space 22through the opening 21 defined in the shield can 20 and is attached tothe inner surface 23 of the shield can 20.

Unlike in FIGS. 6A and 6B, the opening 21 FIG. 6C is defined in the sidesurface 25 of the shield can 20. The antenna radiator 33 enters throughthe opening 21 defined in the side surface 25 of the shield can 25.

The at least a part 32 of the antenna radiator 33 entering through theopening 21 of the shield can 20 includes a feeding pad 31 electricallyconnected with a feeding portion 11 of the PCB 10. The feeding pad 31 iselectrically connected to the feeding portion 11 through the electricalconnecting means 40.

The ferrite film 50 may be disposed between the shield can 20 and theantenna radiator 33. The ferrite film 50 minimizes an influence of theshield can 20 made of a metallic material on radiation performance ofthe antenna radiator 33. The ferrite film 50 may be stacked togetherwith the antenna radiator 33, or may be attached to the shield can 20through an adhering means such as an adhesive and a tape.

The antenna device 30 includes the antenna radiator 33 having apredetermined pattern, and a lower portion of the antenna device 30 iselectrically connected with the feeding portion 11 of the PCB 10 throughthe electrical connecting means 40. The electrical connecting means 40may be a C-clip 40 which is fastened to the PCB 10, and includes afixing end 41 connected with the feeding portion 11 and a free end 42which is extended from the fixing end 41 and then bent to be elasticallydeformed. The free end 42 of the C-clip 40 is in contact with thefeeding pad 31 of the antenna radiator 33.

Therefore, the C-clip 40 is disposed between the feeding pad 31 of theantenna radiator 33 and the feeding portion 11 of the PCB 10 so as topromote a good electrical connection. Due to this configuration, theantenna device 30 may receive a current from the feeding portion 11, andmay resonate by magnetic induction coupling, and thus transmits andreceives a wireless signal at a corresponding frequency range.

Referring to FIG. 6D, the shield can 20 serves as a noise blocker forpreventing internal noise generated from the PCB 10 from being leaked toan outside and prevents external noise from being introduced therein.The shield can 20 is installed on the PCB 10 of the electronic device100.

The shield can 20 provides the receiving space 22 receiving theplurality of electronic components 12 and the electrical connectingmeans 40 mounted on the PCB, and is fastened to the PCB 10 by the screw60. The antenna device 30 is installed on the shield can 20, and the atleast a part 32 of the antenna radiator 33 enters the receiving space 22through the opening 21 defined in the side surface 25 of the shield can20 and is attached to the inner surface 23 of the shield can 20.

Unlike in FIG. 6C, the antenna radiator 33 in the drawing is installedand disposed along the side surface 25 of the shield can 20 and betweenthe PCB 10 and the side surface 25 of the shield can 20. Further, unlikein FIGS. 6A and 6B, the antenna radiator 33 is installed to be attachedto an inner surface of the side surface 25.

The at least a part 32 of the antenna radiator 33 entering through theopening 21 of the shield can 20 includes a feeding pad 31 electricallyconnected with a feeding portion 11 of the PCB 10. The feeding pad 31 iselectrically connected to the feeding portion 11 through the electricalconnecting means 40.

The ferrite film 50 may be disposed between the shield can 20 and theantenna radiator 33. The ferrite film 50 minimizes an influence of theshield can 20 made of a metallic material on radiation performance ofthe antenna radiator 33. The ferrite film 50 may be stacked togetherwith the antenna radiator 33, or may be attached to the shield can 20through an adhering means such as an adhesive and a tape.

The antenna device 30 includes the antenna radiator 33 having apredetermined pattern, and a lower portion of the antenna device 30 iselectrically connected with the feeding portion 11 of the PCB 10 throughthe electrical connecting means 40. The electrical connecting means 40is a connection clip 50 modified from the C-clip of FIGS. 6A-6C. Inconnection clip 50, a fixing end 51 disposed at one end of theconnection clip 50 and fastened to the PCB 10 is electrically connectedwith the feeding portion 11 of the PCB 10, and a free end 52 disposed atthe other end thereof and having predetermined elastic force is incontact with the feeding pad 31 of the antenna radiator 33.

Therefore, the connection clip 50 is disposed between the feeding pad 31of the antenna radiator 33 and the feeding portion 11 of the PCB 10 soas to promote a good electrical connection therebetween. The connectionclip 50 is mounted on the PCB 10, and the free end 52 of the connectionclip 50 is in smooth contact with the feeding pad 31 of the antennaradiator 33. Due to this configuration, the antenna device 30 mayreceive a current from the feeding portion, and may resonate by magneticinduction coupling, and thus transmits and receives a wireless signal ata corresponding frequency range.

According to a configuration of the antenna device 30, in the antennaradiator 33, since the shield can 20 is firmly fastened to the PCB 10 soas to be not deformed by the external environment, a contacting defectbetween the free end 42 of the C-clip 40 and the feeding pad 31 of theantenna radiator 33 may be prevented. Further, since the shield can 20serves as a reinforcing plate, a metal plate (e.g., a gold pad) is notneeded at a contacting point between the free end 42 of the C-clip 40and the feeding pad 31 of the antenna radiator 33, and thusmanufacturing costs may be lowered. Furthermore, since an installationspace of the antenna device 30 is minimized, it is possible to increasean available space. The antenna device 30 may be used for short rangecommunication such as NFC communication and RFID communication.

Table 1 below shows performance comparison between the NFC antennadevice according to embodiments of the present invention and theconventional NFC antenna device.

Table 1 shows measurement results of a lord modulation as an indicatorfor verifying performance of the NFC antenna. As shown in Table 1, it isunderstood that the performance of the NFC antenna device according tothe present invention is almost the same as that of the conventional NFCantenna device. Therefore, when the NFC antenna device according to thepresent invention is applied, it is possible to prevent the contactingdefect of the NFC antenna device and reduce the manufacturing costswithout performance deterioration.

TABLE 1 Efficiency Efficiency (%) of (%) of NFC conventional antenna ofNFC antenna the invention Position Criteria Type A Type B Type A Type B(0, 0, 0) 8.8 36.1 37.3 37.0 36.9 (0, 1, 0) 4.9 35.4 34.6 36.2 35.0 (0,1, 3) 4.9 25.7 24.5 25.5 25.2 (0, 1, 6) 4.9 35.1 34.2 34.8 33.9 (0, 1,9) 4.9 40.2 39.9 39.7 40.6 (1, 0, 0) 7.2 24.7 25.9 25.1 25.5 (1, 1, 0)4.1 25.3 24.5 25.7 24.3 (1, 1, 3) 4.1 24.5 24.3 24.6 23.9 (1, 1, 6) 4.124.4 24.7 25.1 24.2 (1, 1, 9) 4.1 26.2 27.3 25.8 27.1 (2, 0, 0) 5.6 23.824.5 24.4 25.1 (2, 1, 0) 3.3 25.2 24.9 24.7 24.2 (2, 1, 3) 3.3 23.4 23.824.1 23.6 (2, 1, 6) 3.3 26.4 25.8 25.5 25.6 (2, 1, 9) 3.3 24.5 26.2 25.326.8 (3, 0, 0) 4.0 24.4 23.5 24.3 23.5

According to the above-mentioned embodiments, it is possible to providethe antenna device of the present invention to reduce manufacturingcosts and also enhance lifespan and reliability thereof.

While the invention has been shown and described with reference tocertain embodiments thereof, it will be understood by those skilled inthe art that various changes in form and details may be made thereinwithout departing from the spirit and scope of the invention as definedby the appended claims. Therefore, the scope of the invention is definednot by the detailed description of the invention but by the appendedclaims, and all differences within the scope will be construed as beingincluded in the present invention.

What is claimed is:
 1. An electronic device comprising: a printedcircuit board (PCB); a shield can disposed on the PCB; an antennaradiator of which at least a part enters an internal space of the shieldcan and is installed at an inner surface of the shield can; and anelectrical connecting means which is installed at a correspondingposition of the PCB so as to be electrically connected with the at leasta part of the antenna radiator installed at the inner surface of theshield can.
 2. The device of claim 1, wherein the shield can is fastenedto the PCB.
 3. The device of claim 1, wherein a ferrite film is disposedbetween the 15 antenna radiator and the shield can.
 4. The device ofclaim 3, wherein the antenna radiator is stacked with the ferrite film.5. The device of claim 1, wherein the antenna radiator is defined as aflexible printed circuit in which a conductive pattern is disposed in aloop shape.
 6. The device of claim 1, wherein the antenna radiator isused for short range communication.
 7. The device of claim 6, whereinthe antenna radiator is used for one of RFID communication and NFCcommunication.
 8. The device of claim 1, wherein the shield cancomprises: an upper surface having a predetermined size; a side surfacewhich is bent along an edge of the upper surface to have a predeterminedheight; and an opening defined in the shield can, wherein the at least apart of the antenna radiator enters an internal space of the shieldthrough the opening.
 9. The device of claim 8, wherein the at least apart of the antenna radiator is bent through the opening.
 10. The deviceof claim 9, wherein the opening is defined in the upper surface, and theat least a part of the antenna radiator is installed at an inner surfaceopposite to the upper surface.
 11. The device of claim 9, wherein theopening is defined in the side surface, and the at least a part of theantenna radiator is installed at an inner side surface opposite to theside surface.
 12. The device of claim 8, wherein the at least a part ofthe antenna radiator comprises a feeding pad which is electricallyconnected with a feeding portion of the PCB.
 13. The device of claim 12,wherein the electrical connecting means electrically connects thefeeding portion and the feeding pad.
 14. The device of claim 13, whereinthe electrical connecting means is integrally formed by bending a metalplate.
 15. The device of claim 13, wherein the electrical connectingmeans is one of a C-clip and a conductive tape of which one end isconnected with the feeding portion, and the other end is connected withthe feeding pad.
 16. The device of claim 15, wherein the C-clipcomprises, a fixing end which is fastened to the PCB and connected withthe feeding portion; and a free end which extends from the fixing endand then bent to be elastically deformed.
 17. A shield can comprising:an upper surface; an inner surface which is opposite to the uppersurface; an opening which is defined in at least a portion of the uppersurface to pass through to the inner surface; and an antenna radiator ofwhich at least a part is installed at the upper surface, wherein afeeding portion of the antenna radiator is installed at the innersurface through the opening.
 18. The shield can of claim 17, wherein aferrite film is disposed between the upper surface and the antennaradiator.
 19. The shield can of claim 18, wherein the antenna radiatoris stacked with the ferrite film.
 20. The shield can of claim 17,wherein the antenna radiator is used for one of RFID communication andNFC communication.